Bending Strain Gauge Amplifier Module | Sensor Accessories UK

The Y3 bending strain gauge amplifier module reads small electrical changes from a strain gauge. It takes this weak signal and turns it into a clear 0-5V analog output. This allows a microcontroller, like an Arduino, to easily measure changes for weighing or stress analysis. Features and Benefits - Onboard LM358 amplifier - This component helps provide a steady voltage output for accurate readings from the strain gauge. - Works with BF350-type gauges - It's made to connect with common 120 ohm strain gauges. This makes it suitable for many projects. - Adjustable zero point - A small dial on the board lets you set the module for precise measurements from your strain gauge. - Small module size - It measures 32mm by 17mm. This helps it fit into small project boxes and tight spaces. Applications - DIY Digital Scales - Connect this module to a strain gauge and an Arduino. You can then build a custom weighing sensor for your project. - Structural Monitoring - Measure how much materials bend, stress, or deflect. This is useful for engineering tests and early models. - Robotics Projects - Put it in a robotic gripper. It can give feedback about touch or sense how much weight is being lifted. How It Works This Gauge Amplifier Module is designed for precision bending measurement and weighing sensor applications. It works by taking the subtle electrical resistance changes from a connected strain gauge and converting them into a usable electrical signal. A strain gauge is a sensor that measures strain. The module operates with an input voltage of 5-12V DC, making it suitable for various power setups. Its operating temperature range is -20 to 80 °C, allowing for use in diverse environmental conditions. Measuring the Output The module produces an Analog Voltage output signal. This output directly corresponds to the strain detected by the connected strain gauge. To measure this output, you will typically need a multimeter or a data acquisition system capable of reading analog voltage. The voltage reading will then need to be correlated with the specific calibration of your strain gauge and application to determine the precise bending measurement or weight. Ensure your measuring device is compatible with the module's output range. Common Applications This module is ideal for applications requiring precision bending measurement and weighing sensors. Common uses include: - Industrial weighing systems - Load cell applications - Structural health monitoring - Material testing setups - Robotics for force feedback Its ability to amplify the subtle changes from a strain gauge makes it a versatile component for various sensing needs in a professional trade environment. How They Work Strain gauges work on the principle that the electrical resistance of a material changes when it is deformed or strained. A strain gauge is typically a small, thin, resistive foil pattern bonded to a flexible backing. When the object to which the gauge is attached is subjected to stress (like bending or compression), the gauge deforms with it. This deformation changes the length and cross-sectional area of the resistive foil, which in turn alters its electrical resistance. This module, based on strain gauge theory, detects and amplifies these minute resistance changes. Measuring the Signal To measure the signal from a strain gauge, it is typically connected in a Wheatstone bridge configuration to this amplifier module. The module then takes the small voltage imbalance from the bridge, caused by the strain-induced resistance change, and amplifies it into a more robust Analog Voltage output signal. This amplified signal can then be easily read and interpreted by data logging equipment or control systems. Proper wiring and calibration are essential for accurate measurements.